Chromium Controller Articles & Analysis
9 articles found
Hexavalent chromium or Cr(VI) is an airborne carcinogen that is regulated by OSHA for manufacturing and general industrial operations. ...
Overexposure to Hex Chrome can also occur on many forms of carbon steel since many steel alloys contain chromium. Also, welding rods may also contain chromium that can form into Hexavalent Chromium when heated/melted during welding activities. ...
PG&E had used a carcinogen, hexavalent chromium, to control rust in cooling water towers, which ultimately polluted the soil and groundwater. While hexavalent chromium has since been banned for this use, there is still no perfect chemical solution for water-cooling towers. ...
PG&E had used a carcinogen, hexavalent chromium, to control rust in cooling water towers, which ultimately polluted the soil and groundwater. While hexavalent chromium has since been banned for this use, there is still no perfect chemical solution for water-cooling towers. ...
Four freshwater algae, including Cladophora glomerata, Oedogonium westii, Vaucheria debaryana and Zygnema insigne, were tested for their bioaccumulation capacity for cadmium (Cd), chromium (Cr) and lead (Pb) in a controlled environment with an average temperature of 18 °C, and light/dark duration of 12:12 h. ...
Results revealed that mere anion exchangers could not uptake metal ions unless they reacted with the dye to form negatively charged complexes. Trivalent chromium showed significant uptake at pH range of 3.5–4.5. Cadmium, zinc and nickel ions formed complex compounds in the alkaline medium. ...
The vegetated HSSFCW exhibited higher chromium removal efficiency (99.83%), than the control unit with the removal efficiency of 92.53%. High chromium removal was associated with both high temperature as well as high pH values in the HSSFCW units. The reduction in turbidity was found to be 71% in the vegetated wetland unit while the corresponding ...
For the purposes of this test, SAS wanted to determine the effectiveness of the Model 300 Welding Fume Extractor and filter media against Hexavalent Chromium fume commonly found during the welding of stainless steel. Hexavalent Chromium is a known human carcinogen and has recently been the subject of more stringent regulatory control by ...
In the sea sediments, the wastes from a chromium factory control these metal concentrations. The heavy metal contamination in the river sediments results from an existing chromite mine at the northern part of the area. ...